CN103806839B - A kind of drilling equipment - Google Patents
A kind of drilling equipment Download PDFInfo
- Publication number
- CN103806839B CN103806839B CN201210459250.2A CN201210459250A CN103806839B CN 103806839 B CN103806839 B CN 103806839B CN 201210459250 A CN201210459250 A CN 201210459250A CN 103806839 B CN103806839 B CN 103806839B
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- CN
- China
- Prior art keywords
- drill bit
- drilling equipment
- side path
- recess
- bit
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Abstract
The present invention relates to a kind of drilling equipment, including a column drill body and a drill bit, the groove being evenly arranged it is provided with on described drill bit, described groove forms the recess accommodating reamer to bit face extended spot, described drilling equipment includes a central passage, a side path, and the most corresponding each groove is arranged at the inside of described drill bit, its one end and described central passage UNICOM, the other end is opened on the sidewall of described bit grooves；And a front channel, the most corresponding each recess is arranged at the inside of described drill bit, and its one end and described side path UNICOM, the other end is opened on the sidewall close to described drill bit recess.Design by improving the passage in drill bit device, the flow direction making gas changes, within the position, hole in cave while running through cave, can maintain the diameter of needs, the diameter error in got into the cave cave is minimized, reduces sandstone and getting loose of causing that openings position produces because holing.
Description
Technical field
The present invention relates to mechanical field, be specifically related to a kind of drilling equipment for geological drilling operation.
Background technology
Drilling equipment for geological drilling operation or Other Engineering needs to hole on ground or rock, is boring
A large amount of dust and chip can be produced around drill bit during hole, for avoiding these dust and chip to block drill bit,
Need to remove in time.Chinese patent 201020003947.5 discloses a kind of drilling equipment, as it is shown in figure 1,
By arranging central passage the 1, first branched bottom 2 and the second branched bottom 3 in drill bit device, and first
The diameter of branched bottom is more than the diameter of the second branched bottom so that the most of gas produced in drilling process
Flowing to drill bit side exit by the first branched bottom, a small amount of gas flows to drill bit by the second branched bottom
End face outlet, upwards takes away drill bit end by the dust near drill bit end and chip by the gas of flowing.
In this designs, the diameter of the first branched bottom 2 is much larger than branched bottom 3 close to the diameter of central passage 1
Diameter so that a large amount of gases (95%) can be discharged by side exit, although compared with normal drill bit because boring dynamic sand
The cave made made of stones is few, but the inwall in holed cave still can be rushed big by the gas impulsive force that end face outlet produces,
Particularly when the aperture, cave bored is less, this impact will become more apparent.Additionally, above-mentioned drill bit is manufacturing
Upper cost is the highest.
Summary of the invention
It is an object of the invention to provide a kind of drilling equipment, design by improving the passage in drill bit device,
The flow direction making gas changes, and while running through cave, the position, hole in cave can be maintained needs
Within diameter, the diameter error in got into the cave cave is minimized, reduces the sandstone that openings position produces because of boring
And getting loose of causing.
For achieving the above object, the technical scheme is that
A kind of drilling equipment, including a column drill body and a drill bit, drill bit is provided be evenly arranged recessed
Groove, described groove forms recess to bit face extended spot, and described recess is used for accommodating reamer, described expansion
Hole device is rotatably mounted on drill bit by bearing pin, and the pivot that can be formed around described bearing pin from
Off-position rotates to operating position；It is characterized in that described drilling equipment includes
One central passage, through described column drill body and part drill bit, for being passed through drill bit by compressed gas
In chamber；
One side path, the most corresponding each groove is arranged at the inside of described drill bit, its one end with described in
Heart passage UNICOM, the other end is opened on the sidewall of described bit grooves；The centrage of described side path and institute
The centrage stating central passage is an acute angle so that described side path presents the form of oblique top；
And
One front channel, the most corresponding each recess is arranged at the inside of described drill bit, its one end and described side
To passage UNICOM, the other end is opened on top or the roof of described drill bit recess.
The drilling equipment of the present invention, wherein said front channel is substantially vertical setting with described side path.
The drilling equipment of the present invention, wherein said reamer is rotatably mounted on drill bit by bearing pin, when
During boring, described reamer can rotate to operating position around the pivot that described bearing pin is formed from off-position.
The drilling equipment of the present invention, wherein said drill bit includes two or more reamers.
The present invention is by arranging the side path with central passage UNICOM and the front with described side path UNICOM
Passage so that the gas produced in drilling process all flows out from the side of drill bit, decreases in drilling process and bores
The end surface air-out impact on boring cave, when drilling cave, this drilling equipment can will produce in drilling process
Dust and chip take bit face out of by the flowing of compressed gas, it is to avoid block drill bit, and due to will
The outlet of front channel is arranged far from the roof of the recess of bit face, can at utmost reduce gas flowing
The impact to cave inwall that the impulsive force produced causes, makes the position, hole in got into the cave cave maintain the diameter of needs
In, reduce bore error.And reduce the manufacturing cost of existing drilling equipment.
Accompanying drawing explanation
Fig. 1 is the drilling equipment structure sectional view of prior art；
Fig. 2 is the axonometric chart of a kind of embodiment of drilling equipment of the present invention；
Fig. 3 is the end view of Fig. 2 drilling equipment；
Fig. 4 is the A-A sectional view of Fig. 2 drilling equipment；
Fig. 5 is the F-F sectional view of Fig. 2 drilling equipment；
Fig. 6 is the axonometric chart of drilling equipment the second embodiment of the present invention；
Fig. 7 is the end view of Fig. 6 drilling equipment；
Fig. 8 is the E-E sectional view of drilling equipment in Fig. 7；
Fig. 9 is the A-A sectional view of Fig. 7 drilling equipment；
Figure 10 is the D-D sectional view of Fig. 9 drilling equipment.
Detailed description of the invention
Below, in conjunction with accompanying drawing, by the description to better embodiment of the present invention, the present invention is described in detail.
One better embodiment of the drilling equipment of the present invention is as shown in Fig. 2～Fig. 5, and drilling equipment 10 includes
The column drill body 11 being wholely set and drill bit 12, drill bit 12 is provided with the groove 121 being evenly arranged, institute
State groove and form recess 122 to bit face extended spot, include three recesses, recess 122 in the present embodiment
For accommodating reamer 16 (seeing Fig. 2), the end surface of drill bit 12 and fan-shaped reamer 16 is provided with
Hard alloy mill point.Described drill bit 12 is provided with three fan-shaped reamers 16 with bearing pin 162.Reamer
16 are arranged in the described equally distributed recess of drill bit 12 122, specifically, each have in recess 122
There is a blind hole 172, for receiving the bearing pin 162 of reamer 16.The side of drill bit is in the position of neighbouring recess
Put and each there is a transverse holes 174.After reamer 16 is fittingly inserted into the blind hole 172 of correspondence, will be fixed
Position pin 164 inserts described transverse holes 174, then in reamer 16 is located in described recess 122.Alignment pin
On equipped with circlip 166 for securing dowel, and its loose or dislocation can be prevented.Now, reamer 16 phase
Lengthwise movement to drill bit 12 is restricted, simultaneously the most again can around the bearing pin 162 of reamer formed pivotally connected
Freely rotatable, such as turn an angle (such as 90 degree) forward operating position to from off-position.Boring
Device also includes sleeve device (not shown, to see structure in CN201020003947.5), casing bit
Contacted with each other by casing shoe with drill bit device 10 and position.Casing shoe is an annulus, is arranged on sleeve pipe
The front end of device, and it is fixedly connected to casing bit.End in contact before casing shoe and drill bit device, casing shoe
Interior diameter match with chisel edge overall diameter, allow and boring surface when drill bit device is in working order, can be made
Clash into and rotate and hole.Drill bit device front end when impinging onto boring the most simultaneously band draw casing bit and enter
Enter boring.Described drill bit device generally coordinates with casing bit for drillng operation.Before bore operation starts,
When reamer is in off-position (also referred to as closed position), they are positioned at the restriction of described outside diameter
In the range of, make drilling equipment can be accommodated in sleeve pipe and casing shoe, and the reamer of drilling equipment front end is also
Can forward extend out outside casing shoe.When boring proceeds by, each reamer stretching out casing shoe will be towards one
Direction rotates, such as, rotate clockwise, open and be in operating position (also referred to as release position), and they exceed
The angle that described outside diameter is same, and on ground or rock, get out the hole of a sufficiently large diameter, to permit
Permitted casing bit to extend downwardly in hole.When drillng operation completes, this system rotates in the opposite direction, example
As counterclockwise rotated so that reamer comes back to closed position, such that it is able to by drilling equipment from set
Pipe device exits.If desired, can also continue to hole with tungsten carbide insert bit.
Being internally provided with a central passage 13 (such as Fig. 4) at drilling equipment, central passage 13 is through described
Column drill body 11 and part drill bit 12, for being passed through compressed gas in the chamber of drill bit；One side path
14, the most corresponding each groove is arranged at the inside of described drill bit, its one end and described central passage UNICOM,
Other end opening 141 is arranged at the sidewall (seeing Fig. 2) of described bit grooves 121；Described side path
Centrage is an acute angle α with the centrage of described central passage so that described side path 14 presents tiltedly
Form upward；One front channel 15, the most corresponding each recess is arranged at the inside of described drill bit, its
Not direct with central passage 13 UNICOM, but one end and described side path 14 UNICOM, other end opening 151
It is arranged on top or the roof of drill bit recess 122.Front channel 15 is substantially vertical with side path 14
Arrange or the most perpendicular layout.
In drilling process, compressed air enters side path 14, at side path by central passage 13
14 with the joint generation air-flow shunting of front channel 15, the air of about 30% can pass through front channel 15
Discharge, owing to the outlet of front channel 15 is arranged on the roof of the recess being relatively distant from bit face, discharge
Gas take away dust and chip while the cave inwall bored will not be impacted.
Another embodiment of the invention is as shown in Fig. 6～Figure 10, and this embodiment is to have two reamers
Drilling equipment, drill bit device 10 includes 2 recesses 121, setting of drill bit internal gas passage on drill bit 12
Put identical with previous embodiment.Central passage 13 communicates with side path 14, side path UNICOM front again
Passage 15, the opening 141 of side path 14 and the opening 151 of front channel 15 are opened in groove 121 respectively
On the interior roof with recess 122.This kind of embodiment achieves the purpose of the present invention equally.
It will be understood by those skilled in the art that the drilling equipment of the present invention be configurable to as required two,
The design of three or four reamers, correspondingly the quantity of side path and front channel is corresponding to reamer
Quantity.
The above description of this invention is not limiting as the present invention, and those skilled in the art can make according to the present invention
Various changes and deformation, without departing from the spirit of the present invention, claims of the present invention all should be belonged to
Scope.
Claims (4)
1. a drilling equipment, including a column drill body and a drill bit, described drill bit is provided with and is evenly arranged
Groove, described groove to bit face extended spot formed recess, described recess is used for accommodating reamer；Its
It is characterised by that described drilling equipment includes
One central passage, through described column drill body and part drill bit, for being passed through drill bit by compressed gas
In chamber；
One side path, the most corresponding each groove is arranged at the inside of described drill bit, its one end with described in
Heart passage UNICOM, the other end is opened on the sidewall of described bit grooves；The centrage of described side path and institute
The centrage stating central passage is an acute angle so that described side path presents the form of oblique top,
At described chamber end, gas does not has air vent, gas to be to leave central passage with side path；And
One front channel, the most corresponding each recess is arranged at the inside of described drill bit, Bu Yu center, its one end
The direct UNICOM of passage, and with described side path UNICOM, the other end be opened on described drill bit recess top or
On roof, described front channel is substantially vertical setting with described side path.
2. the drilling equipment described in claim 1, it is characterised in that described reamer is by bearing pin rotatably
Being installed on drill bit, the pivot that the most described reamer can be formed around described bearing pin is from off-position
Rotate to operating position.
3. the drilling equipment described in claim 1 or 2, it is characterised in that described drill bit includes two reamers.
4. the drilling equipment described in claim 1 or 2, it is characterised in that described drill bit includes multiple reamer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210459250.2A CN103806839B (en) | 2012-11-15 | 2012-11-15 | A kind of drilling equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210459250.2A CN103806839B (en) | 2012-11-15 | 2012-11-15 | A kind of drilling equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103806839A CN103806839A (en) | 2014-05-21 |
| CN103806839B true CN103806839B (en) | 2016-08-31 |
Family
ID=50704168
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210459250.2A Expired - Fee Related CN103806839B (en) | 2012-11-15 | 2012-11-15 | A kind of drilling equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103806839B (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4690229A (en) * | 1986-01-22 | 1987-09-01 | Raney Richard C | Radially stabilized drill bit |
| SE503323C2 (en) * | 1990-12-21 | 1996-05-28 | Sandvik Ab | Drill bit, preferably lower drill bit |
| US7185717B2 (en) * | 2004-08-05 | 2007-03-06 | Holte Ardis L | Drill bit assembly |
| CN201502327U (en) * | 2009-09-03 | 2010-06-09 | 李保顺 | Down-the-hole bit |
| CN201714302U (en) * | 2010-01-22 | 2011-01-19 | 力骏机械有限公司 | Drilling device |
-
2012
- 2012-11-15 CN CN201210459250.2A patent/CN103806839B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN103806839A (en) | 2014-05-21 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160831 Termination date: 20181115 |
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| CF01 | Termination of patent right due to non-payment of annual fee |